· Private foundation
Siron Foundation co Jeffrey Sartell
Its FY2025 filing reports that it funds preselected organizations and did not take unsolicited requests; check the foundation's own site before ruling it out.
What you funded, over time
By grantee IRS cause code (NTEE).
A cause breakdown isn’t shown here: 62% of Siron Foundation co Jeffrey Sartell’s grantee dollars fall outside its nine largest cause areas, whether because the recipient carries no IRS cause code or because its cause sits in the long tail. A chart would be mostly one residual band and misrepresent the portfolio.
Where the money goes
Your grants by size, and where they go.
| Recipient | Amount |
|---|---|
| Make-A-Wish Foundation | $5,000 |
| Rock County Humane Society | $5,000 |
| Sisters of St Benedict | $4,000 |
| Rock Prairie Presbyterian Church | $4,000 |
| St Labre Indian School | $3,000 |
| Spirit Horse Equine Rescue | $3,000 |
| Americaon Heart Association | $3,000 |
| Salvation Army | $2,000 |
| Hoo's Woods Raptor Center | $2,000 |
| Guiding Eyes For The Blind | $2,000 |
| Eisenhower Foundation | $1,000 |
| Janesville Performing Arts Center | $1,000 |
Do your dollars go where the need is?
Each grant placed by the hardship in its grantee’s ZIP, then read against the area’s typical level.
Your human-services grants (FY17–25, $23k) land where the poverty rate runs at 10%, against an area that typically sits at 11%. 26% of those dollars go to grantees based in above-average-need neighborhoods. Your grants skew toward lower-need ZIPs.
Matched: human-services grants are those whose grantee’s IRS cause code is Human Services. Placed by people below the poverty linein the grantee’s ZIP, averaged from the tracts in that ZIP; grantee ZIP can differ from where services are delivered.
Which US states your grants reach
US grants placed by each grantee’s ZIP, which can differ from where services are actually delivered. Need from public data — U.S. Census/ACS, CDC PLACES, Eviction Lab, USDA — shown as context about the area, never attributed to your giving.
Where the work is directed
The same grants, placed two ways — where each recipient sits, and where its stated purpose earmarks the money.
About 9% of Siron Foundation co Jeffrey Sartell’s grant dollars are earmarked, by their stated purpose, for a different county than the recipient’s own address — money that lands at a nonprofit in one place but is meant to do its work in another.
Recipient view: each grant at its grantee’s ZIP, mapped to a county. Directed view: each grant at the county its stated purpose names, falling back to the recipient’s county when the purpose names no place; US grants only. A county shows only if it carries the top 95% of that view’s dollars. Purposes are read from the foundation’s own 990 grant descriptions.
Who you back again
Which organizations you funded more than once, and which you funded a single time. Each grantee is matched to its own filings.
23 repeat relationships — 9 still active in FY2025, 14 since wound down; 3 grantees were first funded in FY2025 (too recent to call).
How the two cohorts compare
Organizations
Total granted
Median revenue growth · since first grant
Still filing today
New vs renewed · share of each year
In FY2025, 71% of grant dollars renewed an existing relationship; $10k went to new ones.
Where new relationships form · theme of each grantee’s first grant
First-time = a grantee’s first year in your filing window; renewed = funded in an earlier year too. As a portfolio matures the renewed share naturally climbs — once funded, an org stays “renewable” — so the signal is the years that buck it (a new-grantee intake wave). The earliest year is left-censored: relationships that predate the data read as “new.” Theme is the grantee’s IRS cause.
Backed again, and grew
- THTIGER HAVEN INC6× · 2019–2024 · $21k · revenue +26%
- GEGUIDING EYES FOR THE BLIND INC5× · 2020–2025 · $10k · revenue +66%
- TEThe Eisenhower Foundation6× · 2017–2025 · $8k · revenue +34%
Funded once
- THTHE HUMANE SOCIETY OF SOUTHERN WISCONSIN INCgraduatedone grant, 2018 · $10k · revenue +26%
- TATHE AMERICAN FILM INSTITUTEgraduatedone grant, 2017 · $3k · revenue +30%
- IGIndividual grant recipientone grant, 2022 · $2k
Repeat = funded in two or more distinct years; growth and survival are read from each grantee’s own subsequent IRS filings.
The map has a center of gravity: the average direction from the rest of the sector toward the organizations the foundation funds — the shape of its giving. Scoring every nonprofit along that direction surfaces the ones that look most like the portfolio. These are the closest matchesthat aren’t grantees — a resemblance in what they say they do, not a recommendation.
Founded in 1877, american humane association, dba american humane society (american humane) is committed to ensuring the safety, welfare and well-being of animals. our leadership programs are first to serve in promoting and nurturing the…
World animal protection is a global organization working to end factory farming and wildlife exploitation. we expose cruel systems, promote animal-friendly alternatives, and influence policy change. for over 75 years, we've been rewriting…
See schedule odedicated to rescuing, protecting and providing sanctuary for elephants worldwide. our founding directors and elephant care specialist consult internationally for the wellbeing of captive elephants. currently based in brazil,…
Naples zoo is accredited by the american zoo & aquarium association (aza) and has numerous animal exhibits placed on its 45-acre site. (continued on schedule o)each exhibit is unique and designed to simulate typical conditions for the…
Protecting india's precious wildlife from poaching, habitat loss, and human exploitation since 1995.
Utah's hogle zoo creates champions for wildlife and is our community's gateway to animals, connecting our visitors with the natural world and engaging them in wildlife conservation action locally and worldwide.
International Elephant Foundation (IEF) creates a sustainable future for elephants. We generate and effectively invest resources to support elephant conservation, education, research, and management programs worldwide. Through our passion,…
The Abraham Foundation is on a mission to protect threatened animals, wild and domestic, who have no voice of their own.
The association is an educational organization dedicated to the advancement of zoological parks and aquariums in the areas of species conservation, animal welfare, and conservation education.
To prevent cruelty to animals, we promote enacting and enforcing good public policies. enacting good laws depends upon electing good lawmakers, and we remind voters which candidates care about and support animal issues.
The jacksonville zoo & gardens' mission is connecting our community with wildlife and wild places. our vision is a vibrant community energized by a connection to nature that enriches lives and inspires all to preserve and protect our…
The marine mammal center advances global ocean conservation through marine mammal rescue and rehabilitation, scientific research, and education. the center's work is guided and inspired by a shared vision of a healthy ocean for marine…
For reference, the grantee most central to the portfolio’s shape is Make-a-Wish Foundation of Illinois Inc and the most unlike its peers is Gentle Giants. Resemblance is measured on each organization’s own IRS 990 mission text; it reflects how work is described, not its quality or impact.
Your grantees are a median of 45 years old; the field is 16. You back the established end — and your money leans older still.
The field is 22% startups (under 5 years old) — 5% of your grantees by number, and just 1% of your money.
The orgs you fund almost never close — 0.0% lost their exemption, against 13% of the field you don’t fund.
Age = years since IRS exemption (a founding proxy). “Closed” = auto-revocation for 3 years of non-filing — a floor on closure, not proof, and bigger established orgs lapse least. Association, not causation.
21 grantees tracked through their own filings, 2017–2025.
Each one resolved to its own IRS returns and tracked year by year — your grant beside their revenue from every source. Association, dated; never a causal claim.
Counted here: distinct organizations you funded across 2017–2025, not grant rows in a single year — so this will not match the grant count on the cover. 21 of the 33 grantees resolved in that span have returns of their own we could reconcile; the rest are funded organizations whose filings we could not track year by year.
Where your money sits — by cause, then by grantee
Each org by its size and your share of it — top-left is where you’re load-bearing
Go grantee by grantee — a decade per org, and how each moved after you funded them
A decade per grantee — revenue shaded, your grants as bars, all rows on one timeline.
- Who funds HOLLYWOOD HERITAGE ↗
- Who funds TIGER HAVEN INC ↗
- Who funds GUIDING EYES FOR THE BLIND INC ↗
- Who funds THE HUMANE SOCIETY OF SOUTHERN WISCONSIN INC ↗
- Who funds The Eisenhower Foundation ↗
- Who funds MARA ELEPHANT PROJECT USA INC ↗
- Who funds EVERYONE COOPERATING TO HELP OTHERS INC ↗
- Who funds MILTON HISTORICAL SOCIETY ↗
- Who funds APTIV FOUNDATION INC ↗
- Who funds JANESVILLE PERFORMING ARTS CENTER INC ↗
- Who funds GENTLE GIANTS ↗
- Who funds LION HABITAT RANCH INC ↗
- Who funds MAKE-A-WISH FOUNDATION OF ILLINOIS INC ↗
- Who funds GENERAL PATTON MEMORIAL INC ↗
- Who funds American Heart Association Inc ↗
- Who funds THE AMERICAN FILM INSTITUTE ↗
- Who funds HOOS WOODS RAPTOR CENTER ↗
- Who funds ANIMAL RECOVERY MISSION INC ↗
- Who funds NATIONAL MUSEUM OF THE AMERICAN SAILOR FOUNDATION ↗
- Who funds GLAUCOMA RESEARCH FOUNDATION ↗
- Who funds Keepers of the Wild ↗
The grantmakers whose grantees overlap with yours far more than size alone predicts. Each orbits closer the stronger the alignment; the arcs between them show where they also fund each other. Here it reads as a tightly interlocked camp — most of these funders back each other's grantees too.
Open a dossier: Community Foundation of Southern Wisconsin Inc · Alliant Energy Foundation Inc · Janesville Foundation Inc · The Blackbaud Giving Fund · Paypal Charitable Giving Fund · Network for Good · Vanguard Charitable Endowment Program · Donor Advised Charitable Giving Inc · Fidelity Investments Charitable Gift Fund · Amazonsmile Foundation
Affinity is a Gamma-Poisson posterior co-funding rate, re-centered on the typical rate, so thin evidence shrinks toward no signal. A research starting point: overlap is association, not proof of shared intent.
Government reliance of your grantees
Every dot is one organization Siron Foundation co Jeffrey Sartell funds. Left–right is the share of its income from government; up–down is the share from you. Bigger dots raise more. Filter to federal or a single department — and drag the year to watch it move.
Government income is each org’s traced federal awards (USASpending — grants and contracts) plus state payments (open checkbooks) as a share of its total revenue (IRS Form 990); the self-reported government-grant line (990 line 1e) is carried for cross-check: a grantee that reports government grants we could not trace to a source is left off the chart rather than shown as receiving none. An association, not a claim that your grant caused the public funding. Coverage is precision-first — a floor, not a census; state records exist for 9 states, so a grantee outside them shows no state figure (dimmed) rather than a false zero. Federal award amounts are obligations, which can span years, so a single-year share is indicative. 990 filings lag 12–24 months.